<template>
  <div class="xtx-cart-page">
    <div class="container">
      <Bread>
        <BreadItem to="/">首页</BreadItem>
        <BreadItem>购物车</BreadItem>
      </Bread>
      <div class="cart">
        <table>
          <thead>
            <tr>
              <th width="120">
                <Checkbox
                  @change="checkedAllGoods($event)"
                  :modelValue="$store.getters['cart/validIsCheckAll']"
                >全选</Checkbox>
              </th>
              <th width="400">商品信息</th>
              <th width="220">单价</th>
              <th width="180">数量</th>
              <th width="180">小计</th>
              <th width="140">操作</th>
            </tr>
          </thead>
          <!-- 有效商品 -->
          <tbody>
            <tr v-if="$store.getters['cart/validList'].length === 0">
              <td colspan="6">
                <CartNone></CartNone>
              </td>
            </tr>
            <tr v-for="goods in $store.getters['cart/validList']" :key="goods.skuId">
              <td>
                <Checkbox
                  @change="checkedOneGoods($event, goods.skuId)"
                  :modelValue="goods.selected"
                />
              </td>
              <td>
                <div class="goods">
                  <router-link :to="`product/${goods.id}`">
                    <img :src="goods.picture" alt />
                  </router-link>
                  <div>
                    <p class="name ellipsis">{{ goods.name }}</p>
                    <!-- 选择规格组件 -->
                    <CartSku
                      @change="$event => updateCartSku(goods.skuId, $event)"
                      :attrsText="goods.attrsText"
                      :skuId="goods.skuId"
                    />
                  </div>
                </div>
              </td>
              <td class="tc">
                <p>&yen;{{ goods.nowPrice }}</p>
                <p v-if="goods.nowPrice < goods.price">
                  比加入时降价
                  <span class="red">&yen; {{ goods.nowPrice - goods.price }}</span>
                </p>
              </td>
              <td class="tc">
                <Numbox
                  @update:modelValue="newVal => changeCount(goods.skuId, newVal)"
                  :modelValue="goods.count"
                />
              </td>
              <td class="tc">
                <p class="f16 red">&yen;{{ goods.nowPrice * 100 * goods.count / 100 }}</p>
              </td>
              <td class="tc">
                <p>
                  <a href="javascript:;">移入收藏夹</a>
                </p>
                <p>
                  <a class="green" href="javascript:;" @click="deleteCart(goods.skuId)">删除</a>
                </p>
                <p>
                  <a href="javascript:;">找相似</a>
                </p>
              </td>
            </tr>
          </tbody>
          <!-- 无效商品 -->
          <tbody v-if="$store.getters['cart/invalidList'].length > 0">
            <tr>
              <td colspan="6">
                <h3 class="tit">失效商品</h3>
              </td>
            </tr>
            <tr v-for="goods in $store.getters['cart/invalidList']" :key="goods.id">
              <td>
                <Checkbox
                  @change="checkedOneGoods($event, goods.skuId)"
                  :modelValue="goods.selected"
                  style="color:#eee;"
                />
              </td>
              <td>
                <div class="goods">
                  <router-link :to="`product/${goods.id}`">
                    <img :src="goods.picture" alt />
                  </router-link>
                  <div>
                    <p class="name ellipsis">{{ goods.namer }}</p>
                    <p class="attr">{{ goods.attrsText }}</p>
                  </div>
                </div>
              </td>
              <td class="tc">
                <p>&yen;{{ item.nowPrice }}</p>
              </td>
              <td class="tc">{{ item.count }}</td>
              <td class="tc">
                <p>&yen;{{ item.nowPrice * 100 * item.count / 100 }}</p>
              </td>
              <td class="tc">
                <p>
                  <a class="green" href="javascript:;" @click="deleteCart(goods.skuId)">删除</a>
                </p>
                <p>
                  <a href="javascript:;">找相似</a>
                </p>
              </td>
            </tr>
          </tbody>
        </table>
      </div>
      <!-- 操作栏 -->
      <div class="action">
        <div class="batch">
          <Checkbox
            :modelValue="$store.getters['cart/validIsCheckAll']"
            @change="checkedAllGoods($event)"
          >全选</Checkbox>
          <a href="javascript:;" @click="batchDeleteCart(false)">删除商品</a>
          <a href="javascript:;">移入收藏夹</a>
          <a href="javascript:;" @click="batchDeleteCart(true)">清空失效商品</a>
        </div>
        <div class="total">
          共 {{ $store.getters['cart/selectedTotal'] }} 件商品，已选择 {{ $store.getters['cart/selectedTotal'] }} 件，商品合计：
          <span
            class="red"
          >¥{{ $store.getters['cart/selectedAmount'] }}</span>
          <Button type="primary" @click="goCheckout">下单结算</Button>
        </div>
      </div>
      <!-- 猜你喜欢 -->
      <GoodRelevant />
    </div>
  </div>
</template>
<script>
import Confirm from '@/components/library/Confirm'
import Message from '@/components/library/Message'
import GoodRelevant from '@/views/goods/components/goods-relevant'
import { useRouter } from 'vue-router'
import { useStore } from 'vuex'
import CartNone from './components/cart-none.vue'
import CartSku from './components/cart-sku.vue'
export default {
  name: 'CartPage',
  components: { GoodRelevant, CartNone, CartSku },
  setup(props) {
    const store = useStore()
    const checkedOneGoods = (e, skuId) => {
      store.dispatch('cart/updateCart', {
        selected: e,
        skuId
      })
    }

    // 全选按钮
    const checkedAllGoods = (selected) => {
      store.dispatch('cart/checkedAllGoods', selected)
    }

    // 根据skuId删除指定商品
    const deleteCart = async (skuId) => {
      try {
        await Confirm({ text: '您确定从购物车删除该商品吗？' })
        store.dispatch('cart/deleteCart', skuId).then(() => {
          Message({ type: 'success', text: '删除成功' })
        })
      } catch (error) {
        Message({ text: '取消删除成功' })
        console.log(error);
      }
    }

    // 批量删除选中商品 (失效商品)
    const batchDeleteCart = async (isClear) => {
      await Confirm({ text: `您确定从购物车删除${isClear ? '失效' : '选中'}商品吗？` })
      if (!isClear && store.getters['cart/selectedList'].length > 0 || isClear && store.getters['cart/invalidList'].length > 0)
        store.dispatch('cart/batchDeleteCart', isClear).then(() => {
          Message({ type: 'success', text: `删除${isClear ? '失效' : '选中'}商品成功` })
        })
      else Message({ text: `请先选中需要删除的${isClear ? '失效' : '选中'}商品` })
    }

    // 修改选中数量
    const changeCount = (skuId, count) => {
      store.dispatch('cart/updateCart', { skuId, count })
    }

    // 修改规格
    const updateCartSku = (oldSkuId, newSku) => {
      store.dispatch('cart/updateCartSku', { oldSkuId, newSku })
    }

    const router = useRouter()
    const goCheckout = () => {
      // 1. 判断是否选择有效商品
      // 2. 判断是否已经登录，未登录 弹窗提示
      // 3. 进行跳转 （需要做访问权限控制）
      const { profile } = store.state['user']
      if (store.getters['cart/selectedTotal'] === 0) return Message({ text: "请至少选中一件商品" })
      if (!profile.token) {
        Confirm({ text: "下单结算需要登录，您是否去登录？" }).then(() => {
          // 点击确认
          router.push('/member/checkout')
        }).catch(() => { Message({ type: 'success', text: "取消登录成功" }) })
      } else {
        router.push('/member/checkout')
      }
    }

    return {
      checkedOneGoods,
      checkedAllGoods,
      deleteCart,
      batchDeleteCart,
      changeCount,
      updateCartSku,
      goCheckout
    }
  }
}
</script>

<style scoped lang="less">
.tc {
  text-align: center;
  -numbox {
    margin: 0 auto;
    width: 120px;
  }
}
.red {
  color: @priceColor;
}
.green {
  color: @xtxColor;
}
.f16 {
  font-size: 16px;
}
.goods {
  display: flex;
  align-items: center;
  img {
    width: 100px;
    height: 100px;
  }
  > div {
    width: 280px;
    font-size: 16px;
    padding-left: 10px;
    .attr {
      font-size: 14px;
      color: #999;
    }
  }
}
.action {
  display: flex;
  background: #fff;
  margin-top: 20px;
  height: 80px;
  align-items: center;
  font-size: 16px;
  justify-content: space-between;
  padding: 0 30px;
  .xtx-checkbox {
    color: #999;
  }
  .batch {
    a {
      margin-left: 20px;
    }
  }
  .red {
    font-size: 18px;
    margin-right: 20px;
    font-weight: bold;
  }
}
.tit {
  color: #666;
  font-size: 16px;
  font-weight: normal;
  line-height: 50px;
}
.xtx-cart-page {
  .cart {
    background: #fff;
    color: #666;
    table {
      border-spacing: 0;
      border-collapse: collapse;
      line-height: 24px;
      th,
      td {
        padding: 10px;
        border-bottom: 1px solid #f5f5f5;
        &:first-child {
          text-align: left;
          padding-left: 30px;
          color: #999;
        }
      }
      th {
        font-size: 16px;
        font-weight: normal;
        line-height: 50px;
      }
    }
  }
}
</style>